| 摘要: |
| 表面织构作为一种改善摩擦学性能的方法，已成功应用于工业领域。利用计算流体动力学（CFD）模型模拟研究了流体润滑状态下部分表面凹槽织构的动压润滑性能，详细分析了表征部分凹槽织构在摩擦副表面排列布局的位置参数L以及凹槽宽度D和雷诺数Re对润滑油膜承载的影响。结果表明：在较低雷诺数Re下，位置参数L对油膜承载影响明显，当Re=3，D=0.2时，L从0.4减少到0.05，油膜承载提升了58.99%，然而，随雷诺数Re的增加，位置参数L对油膜承载的作用逐渐减弱。另外，凹槽深度一定时，存在最优的凹槽宽度D，其对应着最大的油膜承载。 |
| 关键词: 部分织构 动压润滑 CFD数值模拟 雷诺数 |
| DOI：10.3969/j.issn.1007-9289.2013.06.019 |
| 分类号: |
| 基金项目: |
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| CFD-analysis of Partiall Surface Groove Texture on Hydrodynamic Lubrication |
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ZHAO Yuncai, HAN Lei
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School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi
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| Abstract: |
| Surface texturing has been successfully applied to industry fields as a means for enhancing tribological properties of mechanical components. A computational fluid dynamics (CFD) model is developed to study the hydrodynamic capability of partially surface groove texturing on fully lubricated sliding. The effects of location parameter L, which is used to characterize a pattern of array on the friction pair surface, groove width D and Reynolds number Re on load bearing capacity of oil film are discussed in detail. The results show that location parameter L has a significant effect on load bearing capacity with low Reynolds number Re. When L varies from 0.4 to 0.05, e.g., the load bearing capacity has an increase of 58.99% at Re=3 and D=0.2. However, an increase in Reynolds number Re may reduce this effect. Additionally, an optimal groove width D for the maximum load bearing capacity exists at a special depth of groove. |
| Key words: partiall surface texturing hydrodynamic lubrication computation fluid dynamics (CFD) Reynolds number (Re) |
